At the beginning of human history, we had to satisfy our energy needs (for food, heat and movement) by using our own muscle power and gathering or hunting naturally available plants, animals and wood. Each stage in the evolution of human society (the development of farming, domestication of animals, harnessing of wind and water power)…
We depend on a variety of energy resources, both renewable (R) and nonrenewable (NR), to meet our energy needs. Most used energy sources in the world: oil: NR; 50-year life expectancy natural gas: NR; 125-year life expectancy coal: NR; 200-300 year life expectancy water power: R; uranium (nuclear power): NR; ?? *The top 3 energy…
#1 Climate Change The increase in greenhouse gasses (mainly CO2, CH4, and NOs) due to the burning of fossil fuels is causing a general increase in the average global surface temperature More greenhouse gasses are causing more of the sun’s and earth’s radiation to be trapped in our atmosphere Some areas are expected to experience…
Humans are very reliant upon electricity. Think back to the blackout of August 2003 and recall how whole cities were shut down. Since we rely on electricity so much, it’s important to produce as much of it as possible and conserve it whenever we can. All energy sources are either renewable or nonrenewable. A renewable…